HTML Elements

<ul>

HTML element · 5 supported, 9 partial, 0 unsupported across 15 clients

The <ul> element marks an unordered list. Bullets and indentation defaults vary significantly across clients, which makes <ul> one of the more inconsistent layout primitives in email. Some templates reset list styles entirely and rebuild bullet visuals using HTML entities or images for full control.

Client Support

Client	Category	Engine	Support
Gmail	webmail	Gmail Web	Partial
Gmail Android	mobile	Gmail Mobile	Partial
Gmail iOS	mobile	Gmail Mobile	Partial
Outlook 365	webmail	Outlook Web	Partial
Outlook (New)	desktop	Outlook Web	Partial
Outlook Classic	desktop	Microsoft Word	Partial
Outlook iOS	mobile	Outlook Mobile	Partial
Outlook Android	mobile	Outlook Mobile	Partial
Apple Mail	desktop	WebKit	Supported
Apple Mail iOS	mobile	WebKit	Supported
Yahoo Mail	webmail	Yahoo	Partial
Samsung Mail	mobile	Samsung	Supported
Thunderbird	desktop	Gecko	Supported
HEY Mail	webmail	WebKit	Supported
Superhuman	desktop	Blink	Unknown

Client-by-client behaviour for <ul>

Fully supports <ul> (5): Apple Mail, Apple Mail iOS, Samsung Mail, Thunderbird, HEY Mail.

Partial support (9): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Yahoo Mail. Expect rendering quirks unique to each engine — partial support typically means a subset of values, an ignored shorthand, or sanitizer-specific rewrites.

Behaviour unverified in: Superhuman.

When to use <ul> in email

Feature lists in product launch emails.
Onboarding checklists in lifecycle drip campaigns.
Bulleted summaries in digest-style content.

Rendering behaviour and edge cases

Default list-style-position and padding-left vary between clients — Outlook indents differently than Gmail.
Some clients strip the bullet entirely if list-style is set to none on the <ul> but not on <li>.
Mobile clients sometimes reduce the indent significantly, causing list items to wrap closer to the bullet than intended.

Recommended fallback strategy

Reset padding-left and margin on both <ul> and <li> inline. For pixel-perfect bullets, replace the default marker with an <img> or styled <span> inside each list item.